The Persistence of Memory (Dali, 1931)

The Persistence of Memory stands as the single most reproduced Surrealist image in history, a feat achieved by its instantly recognizable melting clocks. The drooping clocks, inspired by Camembert cheese melting in the summer heat, have appeared on over 10 million pieces of merchandise since 1999, when a private collector paid $29.9 million for a 20% larger preparatory study.